Megger MIT430/2 Series Insulation Testers Insulation and continuity tester is designed for exceptionally wide range of applications from electrical installations, cable testing, motor testing, automotive, ESD, panel building, avionics, maintenance and more. Enhanced insulation testing with feedback controlled test voltages to limit over-voltage to 2%. A variable range has been added to allow any intermediate voltage from 250V to 1000V in 10V steps, where application specific test voltages are required that do not appear in the standard ranges. Continuity testing is now significantly faster, and a single autoranging function replaces the "ohms" and "kOhms" ranges.